Delfield 406-CA Spezifikationen PDF herunterladen (Seite 8)

Delﬁeld Scientiﬁc

For customer service, call (800) 733-8829, (800) 773-8821, Fax (989) 773-3210, www.delﬁeld.com

SCIENTIFIC

Freezer Operation

Environmentally friendly R404A refrigerant is used. The

system has the capability of maintaining between -4°F (-20˚C)

and 0°F (-17˚C) in heavy use operations. System is controlled

using Delfield’s electronic temperature control, which provides

improved pull down times, reducing compressor cycling

and longer compressor life with lower energy consumption.

Control system automatically defrosts the evaporator coil

every 4 hours to assure evaporator coil is free of ice and

operating at optimum efficiency. Evaporator condensate is

eliminated using an energy efficient hot gas system.

With the doors closed, the temperature of the cabinet should

reach 0°F (-18°C) on freezers in about one hour. Continuous

opening and closing of the doors will hamper the unit’s ability

to maintain optimum temperature.

The electronic temperature control constantly monitors box

temperature as well as evaporator coil temperature to maintain

consistent product temperatures. As an added energy-saving

feature, the electronic controller will switch the evaporator

fan motor on and off with the compressor and condenser fan

motor.

Service Alert

During normal operation the evaporator fan may cycle and/

or pulse independently of the compressor. Contact Technical

Support at 1-800-733-8829 if you are unsure of the proper

function.

IMPORTANT NOTE REGARDING FREEZERS:

Whenever the freezer is plugged in, and the control has

completed initializing, the electronic temperature control will

cycle the compressor, evaporator fan motor, and condenser

fan motor to maintain box temperature at the control setting.

Freezer Automatic Defrost

The control also monitors compressor total running time

and will enter a defrost cycle after total compressor running

time is greater than 4-hours since the last defrost cycle OR

if evaporator coil temperature drops below -34°F (indicating

excessive frost on the coil).

Freezer Manual Defrost

When the control enters the defrost mode, whether manual

or automatic, it switches off the evaporator fan motor,

compressor and condenser fan motor, and switches on the

defrost heater to warm the evaporator coil and melt all frost

accumulated during the previous refrigeration cycle. The

control will continue the defrost cycle for a MINIMUM of 8

minutes and a MAXIMUM of 30 minutes depending on the

amount of frost accumulated on the evaporator coil.

After the defrost cycle is complete, the control returns to a

normal refrigeration cycle, however the evaporator fan motor

will not switch on for 2 minutes AFTER the compressor and

condenser fan motor have begun operating.

Electronic Temperature Control Location & Adjustment

The control is located in the control box at the rear of the unit.

It is factory set at mid-range to maintain about -3°F (-18°C)

box temperature.

Danfoss AK-CC210 Control

If at any time the wrong selection is made

stop pressing buttons and wait approximately 30

seconds and the display will time out. Restart

from the first step.

To Adjust Set Point (Desired Temp)

1. Press and release the center button one time and the

display will show the cabinet set point.

2. Use the top and bottom buttons to adjust the temp

higher or lower to the desired temperature. (note: if the

desired temperature is between 38 and 42 degrees set

the temperature set point at 40 as the temp will fluctuate

above and below the set point) .

3. Once the desired set point is reached on the display,

press and release the center button one time to accept

that temperature.

To Change From Celsius to Fahrenheit:

1. Press and hold the top button of the control until the

display shows r01 then release the button.

2. Press the bottom button approximately 4 times until the

display reads r05.

3. Press and release the center button on time and the

display will show ˚F or ˚C

4. To change use the top or bottom button to scroll and

select the temp format required.

5. Once the chosen format is visible in the display press and

release the center button one time.

6. The display will return and say r05.

7. Do not press any buttons at this point, The display will

time out in approximately 30 seconds and display the

chosen format.

The set point regulates air temperature. The display

is a measure of the bottle temperature. Initially there

could be up to 3°F (1.6°C) difference between these

two temperatures. It may take up to two hours for the

bottle temperature (display) to reach the set point.

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